{"product_id":"value-collection-zmsch70159-o-ring-dash-159-buna-n-pack-of-25","title":"Value Collection ZMSCH70159 O-ring Dash 159 Buna-n Pack of 25","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION ZMSCH70159 is a Dash 159 O-ring made from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in sealing applications. It features a 5-inch inside diameter, a 5.188-inch outside diameter, and a 3\/32-inch (0.0937-inch) round cross section with a 70 Shore A hardness rating. This O-ring delivers excellent resistance to petroleum-based fluids, outstanding compression set performance, and strong tear and abrasion resistance. It is suited for static and dynamic sealing in hydraulic, pneumatic, plumbing, and HVAC systems where contact with petroleum products is expected. Each package contains 25 O-rings.\u003c\/p\u003e\n\u003cp\u003eThis O-ring is used in residential and commercial applications involving fluid sealing, valve stems, pump housings, cylinder heads, and threaded fittings. Its Buna-N compound performs reliably across a wide temperature range of -40 degrees F to 250 degrees F, making it appropriate for both refrigeration-adjacent plumbing lines and general HVAC hydronic or petroleum-service connections. Plumbers, HVAC technicians, and mechanical contractors regularly stock Dash 159 O-rings for routine maintenance and field repairs on equipment with standard SAE and MIL-Spec groove profiles.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N (Nitrile Butadiene Rubber) material with excellent petroleum product resistance\u003c\/li\u003e\n  \u003cli\u003e70 Shore A hardness for reliable sealing under compression in hard-rated groove applications\u003c\/li\u003e\n  \u003cli\u003eOperating temperature range: -40 degrees F to 250 degrees F\u003c\/li\u003e\n  \u003cli\u003eRound cross section conforms to standard SAE and MIL-Spec O-ring groove dimensions for Dash 159\u003c\/li\u003e\n  \u003cli\u003eStrong tear and abrasion resistance for dynamic sealing environments\u003c\/li\u003e\n  \u003cli\u003ePackage of 25 units supports job-site stocking and multiple repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard Dash 159 O-ring grooves dimensioned to SAE and MIL-Spec tolerances. Compatible with petroleum-based fluids, oils, and hydraulic media. Not recommended for exposure to ozone, direct sunlight during storage, or proximity to motors and electrical equipment that generate ozone.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eO-ring replacement is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics. Before replacing, shut off fluid supply, depressurize the line or component, and clean the groove of any debris or residual compound. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent pinching or tearing during assembly. Do not stretch the O-ring beyond its design limits or use tools that may nick the sealing surface.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 5.188 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness (Cross Section)\u003c\/strong\u003e: 3\/32 inch (0.0937 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCross Section Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDash Number\u003c\/strong\u003e: 159\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Buna-N (Nitrile Butadiene Rubber)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 70 Shore A (Hard)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Working Temperature\u003c\/strong\u003e: -40 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Working Temperature\u003c\/strong\u003e: 250 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Fluids\u003c\/strong\u003e: Petroleum products\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE, MIL-Spec\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFDA Approved\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: ZMSCH70159\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51689010135346,"sku":"ZMSCH70159","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38c72b2c3664dda8d4462ce4df4b60c6.jpg?v=1788253751","url":"https:\/\/voomisupply.com\/products\/value-collection-zmsch70159-o-ring-dash-159-buna-n-pack-of-25","provider":"Voomi Supply","version":"1.0","type":"link"}